jianjie

中国天文学会学术期刊

天文学进展

PROGRESS IN ASTRONOMY

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伴随米波III型爆发的快速脉动现象的观测分析

马媛　谢瑞祥　郑向明
(中国科学院国家天文台云南天文台　昆明　650011)

摘要

统计分析了太阳22周峰年期间云南天文台声光频谱仪在230~300 MHz频率范围，记录到的III型爆发和毫秒级快速脉动共存事件。发现有两种不同的脉动现象：(1) 普通型脉动；(2) 包迹型脉动。并在此基础上对III型-脉动共存事件与之对应的光学活动及相关事件，脉动的形态、周期、带宽等观测特征作了分析和讨论。

Observations and Analysis of Solar Radio Narrow-Band Fast Pulsation
Phenomena Associated With Metric Type III Burst

Ma Yuan Xie Ruixiang Zheng Xiangming
(National Astronomical Observatories/Yunnan Observatory,
Chinese Academy of Sciences, Kunming 650011)

Abstract

The type III burst-ms fast pulsation events, corresponding optical activities and correlative events observed with the acousto-optic spectrograph at the Yunnan observatory during the 22nd solar cycle are statistically analyzed in this paper. We found two kinds of pulsation phenomena. Some basic characteristics of the pulsation events such as shape, period, frequency band in the 230~300 MHz range and relative solar active phenomena are obtained, and the production mechanism is qualitatively discussed.